Excavator thumb



FIG. 1 is a top, back, right-side perspective view of an excavator thumb;

FIG. 2 is top, front, right-side perspective view thereof;

FIG. 3 is top, front, left-side perspective view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a front view thereof;

FIG. 7 is a back view thereof;

FIG. 8 is a top view thereof; and,

FIG. 9 is a bottom view thereof.

The dashed broken lines depict portions of the excavator thumb that form no part of the claimed design. The dot-dashed broken lines represent boundaries of the claimed excavator thumb and form no part of the claimed design. 

CLAIM The ornamental design for an excavator thumb, as shown and described. 